Siphon flush tank



Nov. 16, 1937. l.. SERRA SIPI'ION FLUSH TANK Filed March 24, 1936 INVENTOR.

ATTORN EYS.

Patented Nov. 16, 1937 UNITED STATES SIPHON FLUSH TANK Luigi Serra, Washington, D. C., assigner to Serra Ltd., a corporation of New York Application March 24, 1936, Serial No. 70,645

10 Claims.

The present invention relates to flush tanks of the siphonic outlet type and the primary object of the invention is to provide an improved and simplified means for Siphoning the water from the tank.

A further object of the invention is to provide an improved siphon flush tank wherein the usual rubber ball valve at the flushing outlet, and also the usual overflow stand pipe are dispensed with.

A further object resides in the novel formation of the siphon member and the manner of Starting the siphon thru raising the water above its normal level in the tank.

A further object is to provide a vresilientA siphon adapted to be immersed in the water for starting the siphon action.

A still further object resides in the arrangement whereby the siphon member and also the ball float are acted upon for raising the water level to Start the Siphon action. l

A still further object resides in the novel arrangement of the jet starter for the siphon.

Other objects and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawing forming a part of this specication and in whichdrawingi- Y Figure 1 is a vertical ksectional view thru a ushing tank provided with the improved flushing means.

Figure 2 is a horizontal section thru the upper portion of the tank.

f Figure 3 iS a vertical section thru the upper portion of the tank and showing the parts in a position for starting the flushing action.

Figure 4 is an enlarged detail section thru the uppermost portion of the siphon.

Referring to the drawing in detail and wherein like reference characters designate corresponding parts thruout the several views, 5 designates a suitable tank of any preferred construction and provided with a cover or lid G. Extending upwardly into the tank adjacent one end thereof is a stand pipe which connects with a supplyV (cl. Y 4;-50)

when the float raises to a predetermined level in the tank.

Arranged in the tank 5 is a coiled Siphon member I4 which is preferably made of rubber or Some such resilient material preferably pre- Shaped substantially into the form of a single coil as shown. The outlet end I5 of the ringlike siphon member is connected to an L-shaped outlet tting I6 which in turn is connected thru the nipple coupling I 1 with an outlet pipe I8. The ring-like Siphon member is disposed in a substantially vertical position in the tank with its intermediate or crown portion I9 extending slightly above the controlled water level in the tank. The intake end 20 of the vsiphon member is a straight tube portion and extends beside the fitting IB into engagement with the bottom wall of the tank. The extremity of the intake end 20 is beveled as shown so that practically the entire contents of the tank will be siphoned. The outlet end of the tube I0 is directed toward the open intake end 20 whereby when the valve 9 is opened, a jet of water is directedv into the open intake end of the siphon member.

Completely encircling the crown portion I9 of the Siphon member is a metal ring or sleeve 2| which may or may not conform to the curvature of the siphon member. Suitably journaled in vthe front wall of the tank is a'vshaft 22 having attached to its outer end an operating handle 23. u

Mounted upon the inner end of the Shaft 22 isa double lever member having presser arms 24 which extend to opposite sides of the axis of gage the upper Side of the sleeve 2| and force 4the sleeve downwardly when the handle 23 is swung in either direction. The .metal'sleeve 2| aside from preventing wear upon the rubber siphon member I4, also prevents collapsing of the siphon member when pressed downwardly to start the siphon. z

Referring once again to the floatl rod I3, as shown in Figure 2, this rod has an oset rI3 intermediate its ends which extends thru the siphon member directly beneath the metal sleeve 2|. This oifset I3' is engaged by the sleeve 2| when the siphon member is pressed downwardly Y at the crown portion I9.

In operation, when the tank is lled with water to a predetermined surface level as shown in Figure 1, the valve 9 is Shut off by the oat I2 and the uppermost or crown portion I9 of the siphon member is slightly above the water level. When desiring to empty the tank, the handle 23 is op- ???.lld in either direction thus causing one of the the tank again begins to ll with water.

presser arms 24 to force the crown portion I9 of the Siphon member downwardly so that a flow of water is established thru the Siphon member as indicated in Figure 3. The handle may then be released and the Siphoning will continue until the tank is emptied or practically so. As the Siphoning is begun, the float I2 lowers and starts an inflow of water thru the tube Ill and this water is directed thru the end II into the intake end 20 of the Siphon thus increasing the speed of ow thru the Siphon. When the water level drops to a point below the intake end 2U and air is admitted, the siphoning action is broken and When the float I2 has raised suiciently, the valve 9 iS shut off by the rod I3.

As the upper portion of the Siphon member is forced down into the water by the arm 24, the sleeve 2I engages the oset rod portion I3 and also forces the float I2 down into the water. This will cause the water level in the tank to be raised suciently to start the Siphon action without any great amount of downward ilemng of the Siphon member. The water displaced by the downward movement of both the Siphon member and the float will insure Starting of the Siphon action thru a slight movement of the handle 23 due to the quick rise in water level due to the lowering of both of the members I2 and I4 into the water.

From the foregoing, it will be seen that an improved and Simplied form of siphonic outlet for flushing tanks has been provided embodying a novel Siphon member of a resilient nature and. adapted to have its crown portion pressed downwardly into the water for starting the Siphon action and which action is also quickened thru lowering of the float.

Changes in detail may be made to the form of invention herein Shown and described, without departing from the Spirit of the invention or the ScopeV of the following claims.

I claim: Y

l. In a flushing tank, an open ended normally ring-like Siphon member of resilient material, and means for flexing the Siphon member inwardly intermediate its ends to establish siphonic flow thru the member.

2. In a flushing tank having an outlet opening in its bottom, a coiled Siphon member of resilient material disposed vertically in the tank having an outlet end communicatingv with the outlet opening and an intake end adjacent the bottom of the tank, and operating means engaging the upper portion of the Siphon member for ilexing the upper portion of the member downwardly to start a Siphon action.

3.l In a ilushing tank, a Supply valve, a float for controlling the supply valve, an outlet tting in the bottom of the tank, a normally ring-like resilient Siphon member having one end connected with the outlet tting and its other end extending to the bottom of the tank, means for flexing the Siphon member downwardly at its upper portion, and means for causing the float to be moved downwardly as the Siphon member is flexed.

4. In a flushing tank having an outlet fitting in its bottom and a Supply valve, a resilient, normally ring-like Siphon member having one end communicating with the outlet tting and its other end opening into the bottom of the tank, a metal sleeve encircling the upper portion of the Siphon member, a float, a oat rod connecting the iloat and valve and extending thru the ring-like Siphon member beneath Said Sleeve, and means engageable with the upper portion of the sleeve for flexing the upper portion of the Siphon member downwardly and causing downward movement of the oat thru engagement of the sleeve with said rod.

5. In a ushing tank having a Supply valve, a coiled Siphon member, a sleeve encircling the intermediate portion of the Siphon member, presser means engageable with the Sleeve for flexing the Siphon member, a float, and a float rod connecting the float and valve, said rod extending thru the coiled Siphon member immediately beneath said sleeve.

6. In a flushing tank, an L-Shaped outlet fitting extending into the tank, a coiled resilient Siphon member having one end secured to the tting and its other end extending into close proximity with the bottom of the tank, a supply valve, a float for controlling the Supply valve,l and means for immersing the Siphon member and iloat to raise the liquid level in the tank and start Siphon action thru the Siphon member.

7. In a flushing tank, a resilient ring-like Siphon member having its intake end at the bottom of the tank, means for pressing the Siphon member downwardly at its upper side, a float controlled Supply valve for the tank, and an outlet tube for the Valve and having its discharge end directed into the intake end of the Siphon member.

8. In a flushing tank, a ring-like Siphon membena supply valve, a iioat for controlling the Supply valve, and means for pressing the upper portion of the Siphon member downwardly and causing downward movement of sai-d float.

9. In a flushing tank, a Supply valve, a float for controlling the Supply valve, an outlet tting in the bottom of the tank, a resilient Siphon member having one end connected with the outlet fitting and its other end extending to the bottom of the tank, means for flexing the Siphon member downwardly at its upper portion, and means for causing the oat to be moved downwardly as the Siphon member is fixed.

l0. In a flushing tank, a resilient Siphon member having its intake end at the bottom of the tank, means for pressing the Siphon member downwardly at its upper side, a oat controlled Supply valve for the tank, and ari outlet tube for the valve and having its discharge end directed into the intake end of the Siphon member.

LUIGI SERRA.

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